Bug 123340

Summary: ia32el cannot work with kernels built for more than 64 CPUs
Product: Red Hat Enterprise Linux 3 Reporter: Yoav Zach <yoav.zach>
Component: ia32elAssignee: Jakub Jelinek <jakub>
Status: CLOSED RAWHIDE QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 3.0   
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2004-11-18 09:46:56 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
use cpu_set_t for cpu mask instead of unsigned long
none
fixes a problem with prev patch none

Description Yoav Zach 2004-05-17 11:43:12 UTC 
Description of problem:
when running with a kernel that was built for more than 64 CPUs, the 
affinity mask is larger than the size of 'unsigned long' which 
libia32x.so is using for set/get affinity. therefore, calls to this 
syscall ( which are made directly, not via glibc ) fail and cause 
ia32el to crash )

Version-Release number of selected component (if applicable):
4600

How reproducible:
run a 32 bit application, which uses shared memory, in a system that 
was built for more than 64 CPUs

Steps to Reproduce:
1.
2.
3.
  
Actual results:
the application crashes

Expected results:
application should run correctly

Additional info:
Comment 1 Yoav Zach 2004-05-17 11:44:12 UTC 
Created attachment 100267 [details]
use cpu_set_t for cpu mask instead of unsigned long
Comment 2 Yoav Zach 2004-06-22 11:10:26 UTC 
Created attachment 101327 [details]
fixes a problem with prev patch

should go on top of prev patch
Comment 3 Yoav Zach 2004-11-16 08:01:53 UTC 
this is fixed in v5. i believe it should be closed.